Russula emetica

Ciri dan struktur

The sticky cap of R. emetica is 2.5–10 cm wide, with a shape ranging from convex (in young specimens) to flattened, sometimes with a central depression, and sometimes with a shallow umbo. It is a bright scarlet or cherry red, and in maturity, the margins have fine radial grooves extending 2–7 mm towards the center of the cap. The cuticle can be readily peeled from the cap almost to the centre. The brittle flesh is white (or tinged with red directly under the cap cuticle), measures 4–9 mm thick, and has a very sharp and peppery taste. The gills are closely spaced, white to creamy-white, and adnate to adnexed or completely free. They are intervenose (containing cross-veins in the spaces between the gills) and occasionally forked near the cap margin. The white stem measures 4.5–10.5 cm long by 0.7–2.4 cm thick, and is roughly the same width throughout its length, although it can be a bit thicker near the base. Its surface is dry and smooth, sometimes marked by faint longitudinal grooves. It is either stuffed (filled with a cottony pith) or partially hollow, and lacks a ring or partial veil. The fruit bodies have a slightly fruity or spicy smell. Russula emetica produces a white to yellowish-white spore print. The spores are roughly elliptical to egg-shaped, with a strongly warted and partially reticulate (web-like) surface. They have dimensions of 8.8–11.0 by 6.6–8 μm, and are amyloid, meaning that they will stain blue, bluish-grey, to blackish in Melzer's reagent. Basidia (spore-bearing cells) are club-shaped, four-spored, hyaline (translucent), and measure 32.9–50 by 9.0–11.6 μm.

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Rujukan: [1]

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Habitat dan peran ekologis

Like all species of Russula, R. emetica is mycorrhizal, and forms mutually beneficial partnerships with roots of trees and certain herbaceous plants. Preferred host plants are conifers, especially pines. Both the red squirrel (Sciurus vulgaris) and the American red squirrel (Tamiasciurus hudsonicus) are known to forage for, store and eat R. emetica; However, references to "R.emetica" in older studies may actually refer to relatives that are now considered distinct species.

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Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

Mitra tumbuhan

Reproduksi

Russula emetica produces a white to yellowish-white spore print. The spores are roughly elliptical to egg-shaped, with a strongly warted and partially reticulate (web-like) surface. They have dimensions of 8.8–11.0 by 6.6–8 μm, and are amyloid, meaning that they will stain blue, bluish-grey, to blackish in Melzer's reagent. Basidia (spore-bearing cells) are club-shaped, four-spored, hyaline (translucent), and measure 32.9–50 by 9.0–11.6 μm. Cystidia located on the gill face (pleurocystidia) are somewhat cylindrical to club-shaped or somewhat spindle-shaped, and measure 35–88 by 7.3–12.4 μm. They are yellowish, and contain granular contents. Cheilocystidia (found on the edges of the gills), which are similar in shape to the pleurocystidia, are thin-walled, hyaline, and measure 14–24 by 4.4–7.3 μm.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Catatan identitas dan cakupan

• Nama diterima mengikuti Catalogue of Life Base2026-09-11; uraian mempertahankan konsep dan nama sumber aslinya.
• Original geographic, specimen and life-cycle scope retained; source import awaits individual editorial review.
• Impor dan terjemahan otomatis belum diperiksa editorial per profil. Struktur reproduktif yang disebutkan tidak membuktikan seluruh siklus hidup diketahui.
• Pengukuran pada uraian mengikuti spesimen, kultur, dan metode sumber; angka tidak diperluas ke semua populasi.

Melihat dengan konteks

Dokumentasi Russula emetica dari Wikimedia Commons. Russula emetica in Poland Identifikasi mengikuti record berkas sumber.

Jenis

Fotografi

Kredit

MichalPL

Lisensi

CC BY-SA 4.0

Sumber media

Buka entri sumber

Gambar menunjukkan objek menurut identifikasi sumber, bukan verifikasi independen spesimen oleh Fungi. Tidak ada skala baru yang ditambahkan.

Sumber profil

1. [1] Russula emetica — Wikipedia (en)Bagian sumber: Frozen revision 1363040221
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Russula emeticaBagian sumber: ColDP NameUsage.tsv ID 4TRVW; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Russula emeticaBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY-SA 4.0 · MichalPL